o-ring tolerances Iso 3601-1 (class B)

Tolerances cord thickness D2 (mm)

From Ø	To Ø	Tolerance
0.80	2.25	±0.08
2.25	3.15	±0.09
3.15	4.50	±0.10
4.50	6.30	±0.13
6.30	8.40	±0.15
8.40	10.00	±0.21
10.00	12.00	±0.25

Tolerances inner diameter D1 (mm)

From Ø	To Ø	Tolerance
0	<1.72	±0.12
1.72	<2.93	±0.13
2.93	<4.17	±0.14
4.17	<5.44	±0.15
5.44	<6.72	±0.16
6.72	<8.01	±0.17
8.01	<9.31	±0.18
9.31	<10.62	±0.19
10.62	<11.94	±0.20
11.94	<13.27	±0.21
13.27	<14.61	±0.22
14.61	<15.95	±0.23
15.95	<17.29	±0.24
17.29	<18.64	±0.25
18.64	<20.00	±0.26
20	<21.36	±0.27
21.36	<22.73	±0.28
22.73	<24.10	±0.29
24.1	<25.47	±0.30
25.47	<26.85	±0.31
26.85	<28.23	±0.32
28.23	<29.61	±0.33
29.61	<31.00	±0.34
31	<32.39	±0.35
32.39	<33.78	±0.36
33.78	<35.18	±0.37
35.18	<36.58	±0.38
36.58	<37.98	±0.39
37.98	<39.38	±0.40
39.38	<40.79	±0.41
40.79	<42.20	±0.42
42.2	<43.61	±0.43
43.61	<45.02	±0.44
45.02	<46.44	±0.45
46.44	<47.86	±0.46
47.86	<49.28	±0.47
49.28	<50.70	±0.48
50.7	<52.12	±0.49
52.12	<53.55	±0.50
53.55	<54.98	±0.51
54.98	<56.41	±0.52
56.41	<57.84	±0.53
57.84	<59.27	±0.54
59.27	<60.71	±0.55
60.71	<62.14	±0.56
62.14	<63.58	±0.57
63.58	<65.02	±0.58
65.02	<66.47	±0.59
66.47	<67.91	±0.60
67.91	<69.35	±0.61
69.35	<70.80	±0.62
70.8	<72.25	±0.63
72.25	<73.70	±0.64
73.7	<75.15	±0.65
75.15	<76.60	±0.66
76.6	<78.05	±0.67
78.05	<79.51	±0.68
79.51	<80.97	±0.69
80.97	<82.42	±0.70
82.42	<83.88	±0.71
83.88	<85.34	±0.72
85.34	<86.80	±0.73
86.8	<88.27	±0.74
88.27	<89.73	±0.75
89.73	<91.20	±0.76
91.2	<92.66	±0.77
92.66	<94.13	±0.78
94.13	<95.60	±0.79
95.6	<97.07	±0.80
97.07	<98.54	±0.81
98.54	<100.01	±0.82
100.01	<101.48	±0.83
101.48	<102.96	±0.84
102.96	<104.43	±0.85
104.43	<105.91	±0.86
105.91	<107.39	±0.87
107.39	<108.86	±0.88
108.86	<110.34	±0.89
110.34	<111.82	±0.90
111.82	<113.30	±0.91
113.3	<114.79	±0.92
114.79	<116.27	±0.93
116.27	<117.75	±0.94
117.75	<119.24	±0.95
119.24	<120.72	±0.96
120.72	<122.21	±0.97
122.21	<123.70	±0.98
123.7	<125.19	±0.99
125.19	<126.68	±1.00
126.68	<128.17	±1.01
128.17	<129.66	±1.02
129.66	<131.15	±1.03
131.15	<132.64	±1.04
132.64	<134.14	±1.05
134.14	<135.63	±1.06
135.63	<137.13	±1.07
137.13	<138.62	±1.08
138.62	<140.12	±1.09
140.12	<141.62	±1.10
141.62	<143.12	±1.11
143.12	<144.62	±1.12
144.62	<146.12	±1.13
146.12	<147.62	±1.14
147.62	<149.12	±1.15
149.12	<150.62	±1.16
150.62	<152.13	±1.17
152.13	<153.63	±1.18
153.63	<155.13	±1.19
155.13	<156.64	±1.20
156.64	<158.15	±1.21
158.15	<159.65	±1.22
159.65	<161.16	±1.23
161.16	<162.67	±1.24
162.67	<164.18	±1.25
164.18	<162.67	±1.26
162.67	<164.18	±1.27
164.18	<165.69	±1.28
165.69	<167.20	±1.29
167.2	<168.71	±1.30
168.71	<170.22	±1.31
170.22	<171.73	±1.32
171.73	<173.25	±1.33
173.25	<174.76	±1.34
174.76	<176.28	±1.35
176.28	<177.79	±1.36
177.79	<179.31	±1.37
179.31	<180.82	±1.38
180.82	<182.34	±1.39
182.34	<183.86	±1.40
183.86	<185.38	±1.41
185.38	<186.89	±1.42
186.89	<188.41	±1.43
188.41	<189.93	±1.44
189.93	<191.45	±1.45
191.45	<192.98	±1.46
192.98	<194.50	±1.47
194.5	<196.02	±1.48
196.02	<197.54	±1.49
197.54	<199.07	±1.50
199.07	<200.59	±1.51
200.59	<202.12	±1.52
202.12	<203.64	±1.53
203.64	<205.17	±1.54
205.17	<206.69	±1.55
206.69	<208.22	±1.56
208.22	<209.75	±1.57
209.75	<211.28	±1.58
211.28	<212.81	±1.59
212.81	<214.34	±1.60
214.34	<215.87	±1.61
215.87	<217.40	±1.62
217.4	<218.93	±1.63
218.93	<220.46	±1.64
220.46	<221.99	±1.65
221.99	<223.52	±1.66
223.52	<225.06	±1.67
225.06	<226.59	±1.68
226.59	<228.12	±1.69
228.12	<229.66	±1.70
229.66	<231.19	±1.71
231.19	<232.73	±1.72
232.73	<235.80	±1.73
235.8	<237.34	±1.74
237.34	<238.88	±1.75
238.88	<240.42	±1.76
240.42	<241.95	±1.77
241.95	<243.49	±1.78
243.49	<245.03	±1.79
245.03	<246.57	±1.80
246.57	<248.11	±1.81
248.11	<249.66	±1.82
249.66	<251.20	±1.82
251.2	<252.74	±1.83
252.74	<254.28	±1.84
254.28	<255.82	±1.85
255.82	<257.37	±1.86
257.37	<258.91	±1.87
258.91	<260.46	±1.88
260.46	<262.00	±1.89
262	<263.55	±1.90
263.55	<265.09	±1.91
265.09	<266.64	±1.92
266.64	<268.18	±1.93
268.18	<269.73	±1.94
269.73	<271.28	±1.95
271.28	<272.83	±1.96
272.83	<274.38	±1.97

From Ø	To Ø	Tolerance
274.38	<275.92	±1.98
275.92	<277.47	±1.99
277.47	<279.02	±2.00
279.02	<280.57	±2.01
280.57	<282.12	±2.02
282.12	<283.68	±2.03
283.68	<285.23	±2.04
285.23	<286.78	±2.05
286.78	<288.33	±2.06
288.33	<289.88	±2.07
289.88	<291.44	±2.08
291.44	<292.99	±2.09
292.99	<294.54	±2.10
294.54	<296.10	±2.11
296.1	<297.65	±2.12
297.65	<299.21	±2.13
299.21	<300.76	±2.14
300.76	<302.32	±2.15
302.32	<303.88	±2.16
303.88	<305.43	±2.17
305.43	<306.99	±2.18
306.99	<308.55	±2.19
308.55	<310.11	±2.20
310.11	<311.66	±2.21
311.66	<313.22	±2.22
313.22	<314.78	±2.23
314.78	<316.34	±2.24
316.34	<317.90	±2.25
317.9	<319.46	±2.26
319.46	<321.02	±2.27
321.02	<322.58	±2.28
322.58	<324.15	±2.29
324.15	<325.71	±2.30
325.71	<327.27	±2.31
327.27	<328.83	±2.32
328.83	<330.39	±2.33
330.39	<331.96	±2.34
331.96	<333.52	±2.35
333.52	<336.65	±2.36
336.65	<338.21	±2.37
338.21	<339.78	±2.38
339.78	<341.35	±2.39
341.35	<342.91	±2.40
342.91	<344.48	±2.41
344.48	<346.04	±2.42
346.04	<347.61	±2.43
347.61	<349.18	±2.44
349.18	<350.75	±2.45
350.75	<352.31	±2.46
352.31	<353.88	±2.47
353.88	<355.45	±2.48
355.45	<357.02	±2.49
357.02	<358.59	±2.50
358.59	<360.16	±2.51
360.16	<361.73	±2.52
361.73	<363.30	±2.53
363.3	<364.87	±2.54
364.87	<366.44	±2.55
366.44	<368.01	±2.56
368.01	<369.58	±2.57
369.58	<371.16	±2.58
371.16	<374.30	±2.59
374.3	<375.87	±2.60
375.87	<377.45	±2.61
377.45	<379.02	±2.62
379.02	<380.59	±2.63
380.59	<382.17	±2.64
382.17	<383.74	±2.65
383.74	<385.32	±2.66
385.32	<386.89	±2.67
386.89	<388.47	±2.68
388.47	<390.05	±2.69
390.05	<391.62	±2.70
391.62	<393.20	±2.71
393.2	<394.78	±2.72
394.78	<396.35	±2.73
396.35	<397.93	±2.74
397.93	<399.51	±2.75
399.51	<401.09	±2.76
401.09	<402.66	±2.77
402.66	<404.24	±2.78
404.24	<405.82	±2.79
405.82	<407.40	±2.80
407.4	<408.98	±2.82
408.98	<410.56	±2.84
410.56	<412.14	±2.85
412.14	<413.72	±2.86
413.72	<415.30	±2.87
415.3	<416.89	±2.88
416.89	<418.47	±2.89
418.47	<420.05	±2.90
420.05	<421.63	±2.91
421.63	<423.21	±2.92
423.21	<424.80	±2.93
424.8	<426.38	±2.94
426.38	<427.96	±2.95
427.96	<429.55	±2.96
429.55	<431.13	±2.97
431.13	<432.71	±2.98
432.71	<434.30	±2.99
434.3	<435.88	±3.00
435.88	<437.47	±3.01
437.47	<439.05	±3.02
439.05	<440.64	±3.03
440.64	<442.22	±3.04
442.22	<443.81	±3.05
443.81	<445.40	±3.06
445.4	<446.98	±3.07
446.98	<448.57	±3.08
448.57	<450.16	±3.09
450.16	<451.75	±3.10
451.75	<453.33	±3.11
453.33	<434.92	±3.12
434.92	<456.51	±3.13
456.51	<458.10	±3.14
458.1	<459.69	±3.15
459.69	<461.28	±3.16
461.28	<462.87	±3.17
462.87	<464.46	±3.18
464.46	<466.05	±3.19
466.05	<467.64	±3.20
467.64	<469.23	±3.21
469.23	<470.82	±3.22
470.82	<472.41	±3.23
472.41	<474.00	±3.24
474	<475.59	±3.25
475.59	<477.19	±3.26
477.19	<478.78	±3.27
478.78	<480.37	±3.28
480.37	<481.96	±3.29
481.96	<483.56	±3.30
483.56	<485.15	±3.31
485.15	<486.74	±3.32
486.74	<488.34	±3.33
488.34	<489.93	±3.34
489.93	<491.52	±3.45
491.52	<493.12	±3.46
493.12	<494.71	±3.47
494.71	<496.31	±3.48
496.31	<497.90	±3.49
497.9	<499.50	±3.50
499.5	<501.10	±3.51
501.1	<502.69	±3.52
502.69	<504.29	±3.53
504.29	<505.89	±3.54
505.89	<507.48	±3.55
507.48	<509.08	±3.56
509.08	<510.68	±3.57
510.68	<512.27	±3.58
512.27	<513.87	±3.59
513.87	<515.47	±3.60
515.47	<517.07	±3.61
517.07	<518.67	±3.62
518.67	<520.27	±3.63
520.27	<521.87	±3.64
521.87	<523.46	±3.65
523.46	<525.06	±3.66
525.06	<526.66	±3.67
526.66	<528.26	±3.68
528.26	<529.86	±3.69
529.86	<531.46	±3.70
531.46	<533.07	±3.71
533.07	<534.67	±3.72
534.67	<536.27	±3.73
536.27	<537.87	±3.74
537.87	<539.47	±3.75
539.47	<541.07	±3.76
541.07	<542.68	±3.77
542.68	<544.28	±3.78
544.28	<545.88	±3.79
545.88	<547.48	±3.80
547.48	<549.09	±3.81
549.09	<550.69	±3.82
550.69	<552.29	±3.83
552.29	<553.90	±3.84
553.9	<555.50	±3.85
555.5	<557.11	±3.86
577.11	600	±4.03
600	700	±4.65
700	800	±5.26
800	900	±5.87
900	1000	±6.48
1000	1200	±7.69
1200	1400	±8.88
1400	1600	±10.07
1600	1800	±11.25
1800	2000	±12.42

Information on the tolerance list

NOrm ISO 3601-1

DIN ISO 3601-1 is an internationally recognized standard that provides information on permissible dimensional deviations in the manufacture of O-rings.

tolerance zone

The plus/minus tolerance field indicates in mm which tolerance is permissible for the production of O-rings. The size of the field is in relation to the D1 or D2 size.

Shape and surface

In addition to the manufacturing tolerance, ISO 3601 also specifies the permissible form and surface deviations. The deburring area and offset are interesting in practice.